CN204755210U - Fracturing pump and fracturing unit truck - Google Patents
Fracturing pump and fracturing unit truck Download PDFInfo
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- CN204755210U CN204755210U CN201520449636.4U CN201520449636U CN204755210U CN 204755210 U CN204755210 U CN 204755210U CN 201520449636 U CN201520449636 U CN 201520449636U CN 204755210 U CN204755210 U CN 204755210U
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- plunger
- sliding sleeve
- fracturing
- head body
- inner chamber
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Abstract
The utility model discloses a fracturing pump, including the pump head body, plunger, plunger case, sliding sleeve, plunger case and pump head body coupling, sliding sleeve are located plunger case, sliding sleeve and plunger sliding fit. The utility model also provides a fracturing unit truck. The utility model provides high plunger reciprocating motion stability, the loss of reduction fracturing improve pump sending efficiency and reduce the maintenance cost.
Description
Technical field
The utility model relates to oil-gas mining equipment field, particularly a kind of fracturing pump and fracturing unit truck.
Background technique
At present, plunger type fracturing pump realizes the high-pressure delivery of pressure break medium by plunger to-and-fro motion in plunger case.For ensureing the pumping efficiency of plunger in plunger case during to-and-fro motion, the gap between plunger cylindrical and plunger case is generally got and is less than 10mm.The fracturing unit truck of model is generally equipped with a plunger at least 3 kinds of specifications, and the plunger of different-diameter size realizes the conveying of different pressures and discharge capacity.When selecting the plunger of different specification size according to pressure break duty requirements, suitable pump head body or plunger case need be selected to correspond and to carry out fracturing work, guarantee to be unlikely to because volume reduces too greatly the transfer efficiency of pump between plunger and pump head body (or plunger case).
Existing plunger pump, has the following disadvantages:
1) pump head body and the plunger case of correspondingly-sized need be changed when, changing plunger together;
2), according to the plunger of different specification size select different packing boxs, pump head body and plunger case can not be changed, but because cavity volume becomes large when being replaced by small plunger by large plunger, thus reduce pumping efficiency;
3), maintenance cost is higher.
Model utility content
In view of this, the utility model proposes a kind of fracturing pump and fracturing unit truck.To reduce pressure break loss, improve pumping efficiency and reduce maintenance cost.
On the one hand, the utility model provides a kind of fracturing pump, and comprise pump head body, plunger, plunger case, sliding sleeve, plunger case is connected with pump head body, and sliding sleeve is positioned at plunger case, and sliding sleeve and plunger are slidably matched.
Further, sliding sleeve offers sliding sleeve inner chamber, plunger stem is arranged in sliding sleeve inner chamber, and sliding sleeve inner chamber communicates with the pressure chamber of pump head body.
Further, in sliding sleeve inner chamber, be arranged on spring, both ends of the spring is connected with plunger and sliding sleeve respectively.
Further, offer spring chamber at plunger right-hand member, spring fitting is in spring chamber.
Further, be formed with Seal cage between plunger and sliding sleeve inner chamber, plunger offers the oil duct communicated with Seal cage, oil duct extends to plunger left part.
Further, plunger stem cylindrical and sliding sleeve left part inner circle are slidably matched, and plunger right-hand member outside diameter is greater than plunger stem outside diameter, and plunger right-hand member cylindrical and sliding sleeve inner chamber are slidably matched.
Further, offer fluid passage in sliding sleeve right side, sliding sleeve inner chamber is communicated by fluid passage with the pressure chamber of pump head body.
Further, gap≤10mm between sliding sleeve cylindrical and plunger case inner circle.
Further, comprise packing box, packing box is connected with plunger case, plunger and packing box are slidably matched, pump head body is provided with inhaling valve and discharge valve and end cap, plunger case is provided with sliding sleeve left end confined planes, end cap is provided with sliding sleeve right-hand member confined planes, sliding sleeve can only move back and forth in region between sliding sleeve left end confined planes and sliding sleeve right-hand member confined planes.
On the other hand, basis is practical additionally provides a kind of fracturing unit truck, comprises above-mentioned fracturing pump.
The fracturing pump that the utility model provides and fracturing unit truck, increase sliding sleeve in plunger case, can pumping volume reducing, improves pumping efficiency.When plunger changed by needs, do not need pump head body and the plunger case of changing correspondingly-sized together, only need to match corresponding sliding sleeve according to pumping volume, regulate pumping volume.Sliding sleeve can be fixed in plunger case, also can move back and forth in plunger case.Sliding sleeve can also play plunger guide effect, prevents from wandering off in plunger reciprocates process, destroys the Sealing in packing box.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the fracturing pump structural representation of the utility model first embodiment;
Fig. 2 is the sliding sleeve right part structural representation of Fig. 1;
Fig. 3 is the fracturing pump structural representation of the utility model second embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Below in conjunction with Fig. 1 to Fig. 3, preferred embodiment of the present utility model is described in further detail,
As shown in Figure 1, the fracturing pump of this preferred first embodiment: comprise pump head body 3, plunger 1, plunger case 2, sliding sleeve 4, packing box 6.Plunger case 2 and pump head body 3 are bolted, and packing box 6 and plunger case 2 are bolted, in packing box 6, be provided with Sealing, and pump head body 3 is provided with inhaling valve 33 and discharge valve 30 and end cap 32.Packing box 6 is provided with sliding sleeve left end confined planes 60, end cap 32 is provided with sliding sleeve right-hand member confined planes 310.
Sliding sleeve 4 is positioned at plunger case 2, gap L 1≤10mm between sliding sleeve 4 cylindrical and plunger case 2 inner chamber inner circle.Sliding sleeve 4 can move back and forth in region between sliding sleeve left end confined planes 60 and sliding sleeve right-hand member confined planes 310.Owing to there is gap L 1 between sliding sleeve 4 cylindrical and plunger case inner chamber 20 inner circle, be filled with high pressure fracture medium in plunger case inner chamber 20, sliding sleeve 4 is by high pressure fracture dielectric support.Sliding sleeve 4 does not directly contact with plunger case 2, reduces wearing and tearing between sliding sleeve 4 and plunger case 2.
Plunger 1 is slidably matched with packing box 6 and sliding sleeve 4, and plunger 1 realizes end part seal by the Sealing in packing box 6.Plunger 1, under the effect of driving mechanism, realizes moving back and forth.Plunger 1 can drive sliding sleeve 4 to move back and forth in region between sliding sleeve left end confined planes 60 and sliding sleeve left end confined planes 60.Plunger 1 is in reciprocatory movement, and sliding sleeve 4 plays support and leading role, improves plunger 1 to-and-fro motion stability, prevents from wandering off in plunger 1 reciprocatory movement, destroys the Sealing in packing box 6.
Move back and forth to drive sliding sleeve 4.Sliding sleeve 4 offers sliding sleeve inner chamber 40, and plunger 1 bar portion is arranged in sliding sleeve inner chamber 40, and plunger 1 bar portion's cylindrical and sliding sleeve 4 left part inner circle are slidably matched.Offer spring chamber 10 at plunger 1 right-hand member, spring 5 is arranged in spring chamber 10.Spring 5 two ends are connected with plunger 1 and sliding sleeve 4 right side respectively.
As shown in Figure 2, be connected with multiple rib 42 at sliding sleeve 4 right-hand member, rib 42 is divided into five large cavitys, and cavity is fluid passage 41, and sliding sleeve inner chamber 40 is communicated by fluid passage 41 with the pressure chamber 31 of pump head body.Spring 5 one end is connected on sliding sleeve rib 42.
As shown in Figure 1, the utility model first embodiment working procedure is as follows:
When plunger 1 left side is entered, inhaling valve 33 is opened, and enters pressure break medium, under the drive of spring 5, sliding sleeve 4 moves to and is withstood by sliding sleeve left end confined planes 60 together with plunger 1, and now plunger case 2 is static relatively for sliding sleeve 4, the relative sliding sleeve 4 of plunger 1 continues a left side and enters, and spring 5 stretches.After plunger 1 left side enters position, plunger 1 moves and commutates.Plunger 1 right side is entered, and discharge valve 30 is opened, and discharges pressure break medium.Spring 5 return, plunger case 2 is static relatively for sliding sleeve 4.After spring 5 is repositioned to restraining position, plunger 1 right-hand member is resisted against on sliding sleeve rib 42, and sliding sleeve 4 right side together with plunger 1 proceeds to sliding sleeve right-hand member confined planes 310.
Sliding sleeve 4 is longer, and required spring 5 length is longer, the inner chamber 42 of plunger case and pressure chamber 31 volume altogether of pump head body less, namely can be reduced by the pressure break medium compressed, the pumping efficiency of fracturing pump is higher.When sliding sleeve 4 is designed to extreme length, sliding sleeve 4 is blocked by sliding sleeve left end confined planes 60 and sliding sleeve left end confined planes 60, and sliding sleeve 4 can not move.Namely fixed by sliding sleeve 4, now plunger case 2 is static with pump head body 3 relatively for sliding sleeve 4, can not mounting spring 5.
As shown in Figure 3, originally preferably the fracturing pump of the second embodiment is different from the fracturing pump of first embodiment of Fig. 1 is: do not have spring 5, plunger 1 bar portion's cylindrical and sliding sleeve 4 left part inner circle are slidably matched, plunger 1 right-hand member outside diameter is greater than plunger 1 bar portion outside diameter, and plunger 1 right-hand member cylindrical and sliding sleeve inner chamber 40 are slidably matched.Be formed with Seal cage 8 between plunger 1 and sliding sleeve inner chamber 40, plunger 1 offers the oil duct 7 communicated with Seal cage 8, oil duct 7 extends to plunger 1 left part.Outer liquid force feed enters in Seal cage 8 from oil duct 7.
As shown in Figure 3, the utility model second embodiment working procedure is as follows:
When plunger 1 left side is entered, pump head body 3 inhaling valve 33 is opened, and enters pressure break medium.Sliding sleeve 4 moves to sliding sleeve left end confined planes 60 and withstands together with plunger 1.Now oil duct 7 is communicated with drain line, and plunger 1 continues a left side and enters position, and sliding sleeve 4 stops a left side entering, and the hydraulic oil in Seal cage 8 is by oil duct 7 and drain line oil return.Move after plunger 1 left side enters position commutation, now oil duct 7 is communicated with in-line, Seal cage 8 oil-feed, and plunger 1 right side is entered, and sliding sleeve 4 is static, and pump head body 3 discharge valve 30 is opened, and discharges pressure break medium.When plunger 1 moves to sliding sleeve 4 right end position, Seal cage 8 is full of hydraulic oil, and sliding sleeve 4 enters on the right side together with plunger 1.
Hydraulic oil enters Seal cage 8 by oil duct 7, can give the thrust that plunger 1 right side is entered, thus increase pumping pressure under the effect of hydraulic oil.Therefore, the utility model second embodiment scheme is better than first embodiment's scheme.
Fracturing pump of the present utility model can also adopt the third scheme: sliding sleeve 4 cylindrical and plunger case inner chamber 20 inner circle are slidably matched, sliding sleeve 4 offered pressure break medium channel, and the plunger case inner chamber 20 being positioned at sliding sleeve 4 left and right sides is communicated.Also can adopt the 4th kind of scheme, sliding sleeve 4 is fixed in plunger case 2, make sliding sleeve 4 keep static.
Fracturing pump of the present utility model, when plunger 1 changed by needs, does not need pump head body 3 and the plunger case 2 of changing correspondingly-sized together, only needs to match corresponding sliding sleeve 4 according to pumping volume, regulates pumping volume.Pumping volume described in the utility model refers to the volume that can hold pressure break medium in plunger case inner chamber 20 and pump head body 3 pressure chamber 31.
On the other hand, basis is practical additionally provides a kind of fracturing unit truck, comprises above-mentioned fracturing pump.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a fracturing pump, it is characterized in that, comprise pump head body (3), plunger (1), plunger case (2), sliding sleeve (4), plunger case (2) is connected with pump head body (3), sliding sleeve (4) is positioned at plunger case (2), and sliding sleeve (4) and plunger (1) are slidably matched.
2. fracturing pump according to claim 1, it is characterized in that, sliding sleeve (4) offers sliding sleeve inner chamber (40), plunger (1) bar portion is arranged in sliding sleeve inner chamber (40), and sliding sleeve inner chamber (40) communicates with the pressure chamber (31) of pump head body (3).
3. fracturing pump according to claim 2, is characterized in that, is arranged on spring (5) in sliding sleeve inner chamber (40), and spring (5) two ends are connected with plunger (1) and sliding sleeve (4) respectively.
4. fracturing pump according to claim 3, is characterized in that, offers spring chamber (10) at plunger (1) right-hand member, and spring (5) is arranged in spring chamber (10).
5. fracturing pump according to claim 2, it is characterized in that, Seal cage (8) is formed between plunger (1) and sliding sleeve inner chamber (40), plunger (1) offers the oil duct (7) communicated with Seal cage (8), and oil duct (7) extends to plunger (1) left part.
6. fracturing pump according to claim 5, it is characterized in that, plunger (1) bar portion cylindrical and sliding sleeve (4) left part inner circle are slidably matched, plunger (1) right-hand member outside diameter is greater than plunger (1) bar portion outside diameter, and plunger (1) right-hand member cylindrical and sliding sleeve inner chamber (40) are slidably matched.
7. the fracturing pump according to claim 1 to 6 any one, it is characterized in that, be provided with in sliding sleeve (4) right side and offer fluid passage (41), sliding sleeve inner chamber (40) is communicated by fluid passage (41) with the pressure chamber (31) of pump head body (3).
8. the fracturing pump according to claim 1 to 6 any one, is characterized in that, gap (L1)≤10mm between sliding sleeve (4) cylindrical and plunger (1) cylinder inner circle.
9. the fracturing pump according to claim 1 to 6 any one, it is characterized in that, comprise packing box (6), packing box (6) is connected with plunger case (2), plunger (1) and packing box (6) are slidably matched, pump head body (3) is provided with inhaling valve (33) and discharge valve (30) and end cap (32), plunger case (2) is provided with sliding sleeve left end confined planes (60), end cap (32) is provided with sliding sleeve right-hand member confined planes (310), sliding sleeve (4) can only move back and forth in region between sliding sleeve left end confined planes (60) and sliding sleeve right-hand member confined planes (310).
10. a fracturing unit truck, is characterized in that, comprises the fracturing pump as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520449636.4U CN204755210U (en) | 2015-06-26 | 2015-06-26 | Fracturing pump and fracturing unit truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520449636.4U CN204755210U (en) | 2015-06-26 | 2015-06-26 | Fracturing pump and fracturing unit truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204755210U true CN204755210U (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520449636.4U Active CN204755210U (en) | 2015-06-26 | 2015-06-26 | Fracturing pump and fracturing unit truck |
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| CN (1) | CN204755210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909510A (en) * | 2016-05-09 | 2016-08-31 | 西南石油大学 | Hydraulically-powered low-frequency-of-stroke fracturing pump |
-
2015
- 2015-06-26 CN CN201520449636.4U patent/CN204755210U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909510A (en) * | 2016-05-09 | 2016-08-31 | 西南石油大学 | Hydraulically-powered low-frequency-of-stroke fracturing pump |
| CN105909510B (en) * | 2016-05-09 | 2018-02-23 | 西南石油大学 | A kind of low jig frequency fracturing pump of hydraulic-driven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161219 Address after: 102206 South Beijing city of Changping District science and Technology Park 31 manufacturing center of Beijing Liu Lu Li Patentee after: 31 petroleum Intelligent Equipment Co., Ltd. Address before: 102206 Changping District City, North Road, Beijing, the 31 Industrial Park Patentee before: SANY HEAVY ENERGY EQUIPMENT CO., LTD. |